Kershaw complained of tightness while throwing at a workout Tuesday. That led the 26-year-old to undergo a MRI Wednesday that revealed the inflammation.

Kershaw, who has never been on the disabled list, started the Dodgers’ season with an opening victory over the Diamondbacks in Australia. He earned the win pitching 6.2 innings while allowing one earned run, five hits, one walk and striking out seven.

The Dodgers say Kershaw’s next start will be determined after watching his progress while throwing in the next week.